Open social innovation describes the application of "open innovation" with the aim of creating social added value. Innovative impulses come from both state actors and civil society organizations. The innovative power of all social actors is to be sustainably released. The Internet, social media and mobile applications often serve as a catalyst for accelerating innovation processes, spreading ideas and promoting cooperation. A variety of methods, tools and services are available for this purpose. But which tool is right for my goal and my target group? This is where TosiT starts. It allows interested stakeholders to get a quick overview of different platforms and services, that can promote open social innovation In this matter, everybody will be able to find their preferred tool “by a mouse click” for his personal innovation project